So you mean that the latest update of Firefox slow the thing down? Our team is already looking into this. It seems that the problem is not only on TM Toolbar Extension but other program's extension as well. We'll send updates from time to time. :)

Hi TM_X , I totally agree, the problem is not the Firefox extension, is someone in the main services/drivers. The only way to make Firefox fast is to turn off "Protection against virus & spyware" with a right-click on the TM tray icon.

SOLUTION ! (at least temporary), add firefox.exe to the exclusions (not that path could be different, use the browse functionality to exclude the executable file)Doing this, now Firefox works normally, so there is something in Firefox version 62, that makes TM go mad.